Hi, I am a Senior Network Engine at one of the biggest ISP's in Moldova. I have about 7 experience of experience in networking, and especially I have experience with Cisco and Juniper routers and switches. Our ISP Network is build only on Cisco and Juniper devices(MX series routers and EX series switches, hands on experience in testing QFX switches and SRX as firewall for our office), and I am responsible for configuring, maintenance and development of our network, so every day I deal with configuring of Juniper routers and switches.
Also, I am JNCIA-Junos, JNICS-SP Routing & Switching, JNCIS-SEC(Security) certified engineer + I am network Instructor at local Networking Academy, called iNet Academy Moldova where I teach JNCIA-Junos, JNICS-SP Routing & Switching, JNCIS-SEC and CCNA Routing & Switching and CCNP Routing & Swtiching courses.
Given to my experience in networking, and experience with Juniper devices, I think that I can easily help you with any configuration made on Juniper Networks devices and SRX as well. You can also take a look at my profile, and see that I already have done few projects here on Freelancer with Juniper configuration and with SRX as well. We can discuss about the price after you give me ore info about what exactly you want to config.